Zango辩称法律规定的免责权只对网络服务提供商适用，而并不对提供内容过滤软件的公司适用。

Zango contended that immunity was meant to cover only Internet service providers, not companies that provide access to tools for filtering content.

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但它确实使人们的注意力集中到内容过滤上，这是一项观察家们认为以往被低估了的网络安全技术。

But it did put the focus on content filtering, a network security technology that observers say has been undervalue d.

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内容过滤是网络安全领域的新课题，文章建立了一个完整的内容过滤模型，并在TIS的WWW代理服务中实现了此内容过滤模型。

Content filtering in network security is a new subject. This paper founds a complete content filtering model and implements the content filtering model in WWW proxy of TIS.

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